> China is by far the world's biggest polluter, by a factor of 2-3x that of the US so let's not paint them as some beacon of environmental stewardship.

China's leading the planet in development and deployment of renewable energy tech.

What proportion of China's emissions are a consequence of The West's externalizing the manufacturing of what it consumes?

At least with China in the driver's seat it looks like the planet's manufacturing needs will actually get cleaned up. Meanwhile the US will keep pearl clutching as it fades into irrelevance and Zimbabwean hyperinflation.